【发布时间】：2020-06-04 13:44:22
【问题描述】：
我正在尝试使用外部 JS 文件将图像从 HTML 表单上传到 firebase 存储，但是当我尝试上传图像文件（不为空 - 它存在）时，未创建图像位置的路径当我执行 storageRef.put(image);函数，以及图像本身（显然）没有被保存。
这是我的代码：
index.html 文件：
<!DOCTYPE html>
<html>
<head>
<title>אורט ביאליק עדכון פרטים</title>
<link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.4.1/css/all.css" integrity="sha384-5sAR7xN1Nv6T6+dT2mhtzEpVJvfS3NScPQTrOxhwjIuvcA67KV2R5Jz6kr4abQsz" crossorigin="anonymous">
<link href="https://fonts.googleapis.com/css?family=Roboto:300,400,500,700" rel="stylesheet">
<style>
html, body {
min-height: 100%;
direction: rtl
}
body, div, form, input, select, p {
padding: 0;
margin: 0;
outline: none;
font-family: Roboto, Arial, sans-serif;
font-size: 16px;
color: #eee;
}
body { background: url("https://firebasestorage.googleapis.com/v0/b/XXXXXXXX.appspot.com/o/not%20to%20delete%2Fbackground.jpeg?alt=media&token=b5e0cc70-dc1c-40c7-a3fa-15694541828e") no-repeat center; background-size: cover; }
h1, h2 {
text-transform: uppercase;
font-weight: 400;
}
h2 {
margin: 0 0 0 8px;
}
.main-block {
display: flex;
flex-direction: column;
justify-content: center;
align-items: center;
height: 100%;
padding: 25px;
background: rgba(0, 0, 0, 0.5);
}
.left-part, form {
padding: 25px;
}
.left-part {
text-align: center;
}
.fa-graduation-cap {
font-size: 72px;
}
form {
background: rgba(0, 0, 0, 0.7);
}
.title {
display: flex;
align-items: center;
margin-bottom: 20px;
}
.info {
display: flex;
flex-direction: column;
}
input, select {
padding: 5px;
margin-bottom: 30px;
background: transparent;
border: none;
border-bottom: 1px solid #eee;
}
input::placeholder {
color: #eee;
}
option:focus {
border: none;
}
option {
background: black;
border: none;
}
.btn-item, button {
padding: 10px 5px;
margin-top: 20px;
border-radius: 5px;
border: none;
background: #26a9e0;
text-decoration: none;
font-size: 15px;
font-weight: 400;
color: #fff;
}
.btn-item {
display: inline-block;
margin: 20px 5px 0;
}
button {
width: 100%;
}
button:hover, .btn-item:hover {
background: #85d6de;
}
@media (min-width: 568px) {
html, body {
height: 100%;
}
.main-block {
flex-direction: row;
height: calc(100% - 50px);
}
.left-part, form {
flex: 1;
height: auto;
}
}
</style>
</head>
<body>
<div class="main-block">
<div class="left-part">
<img src="https://firebasestorage.googleapis.com/v0/b/XXXXXXXXX.appspot.com/o/not%20to%20delete%2Fkiryat_bialik_img.jpg?alt=media&token=5d637243-1cb1-430c-a7c5-1a98329bb3a0">
</div>
<form name="RegForm" action="/">
<div class="title">
<i class="fas fa-pencil-alt"></i>
<h2>מכללת אורט ביאליק - עדכון פרטים אישיים</h2>
</div>
<div class="info">
<input class="fname" type="text" name="HEfname" id="HEfname" maxlength="20" required autofocus placeholder="שם פרטי">
<input class="fname" type="text" name="HElname" id="HElname" maxlength="20" required placeholder="שם משפחה">
<input class="fname" type="text" name="ENfname" id="ENfname" maxlength="20" required placeholder="שם פרטי באנגלית">
<input class="fname" type="text" name="ENlname" id="ENlname" maxlength="20" required placeholder="שם משפחה באנגלית">
<input type="text" name="Email" inputmode="email" id="email" required maxlength="40" placeholder="Email">
<input type="text" name="id" id="id" required maxlength="9" placeholder="מספר תעודת זהות">
<input type="file" name="img" id="img" required accept="image/*">
</div>
<button type="submit" name="submit" id="submit" value="submit" onclick="return validation();" href="/">שלח</button>
</form>
</div>
<!-- The core Firebase JS SDK is always required and must be listed first -->
<script src="https://www.gstatic.com/firebasejs/7.8.2/firebase-app.js"></script>
<script src="https://www.gstatic.com/firebasejs/7.8.2/firebase-database.js"></script>
<script src="https://www.gstatic.com/firebasejs/7.8.2/firebase-storage.js"></script>
<script src="js/formValidation.js"></script>
<script src="js/formSubmission.js"></script>
</body>
</html>
formSubmission.js：
// My web app's Firebase configuration
var firebaseConfig = {
apiKey: "XXXXXXXXXXXX",
authDomain: "XXXXXXXXXXXX.firebaseapp.com",
databaseURL: "https://XXXXXXXXXXXX.firebaseio.com",
projectId: "XXXXXXXXXXXX",
storageBucket: "XXXXXXXXXXXX.appspot.com",
messagingSenderId: "XXXXXXXXXXXX",
appId: "XXXXXXXXXXXX"
};
// Initialize Firebase
firebase.initializeApp(firebaseConfig);
// Reference Users collection
var databaseRef = firebase.database().ref('Users');
// Listen for form submit
document.forms.RegForm.addEventListener('submit', submitForm);
// Submit form
function submitForm() {
//if (validation()) {
// Get values
var HEfname = getInputVal('HEfname');
var ENfname = getInputVal('ENfname');
var HElname = getInputVal('HElname');
var ENlname = getInputVal('ENlname');
var email = getInputVal('email');
var id1 = getInputVal('id');
var imageFile = document.getElementById('img').files[0];
//this VAR's are used in 'saveUser()'; function. ---NOT IN USE---
// unused value=5; if false value=0; if true value=1
var isSavedDatabase = false; // if user data successfully commited to Firebase Database.
var isSavedImage = false; // if user image successfully commited to Firebase Storage.
// Save User
saveUser(HEfname, HElname, ENfname, ENlname, email, id1, imageFile);
}
// Function to get get form values
function getInputVal(id) {
return document.getElementById(id).value;
}
// Save User to firebase
function saveUser(HEfname, HElname, ENfname, ENlname, email, id1, imageFile) {
// reference to image path in storage 'passportImages/id1' (id1 is current user ID)
var imageRef = firebase.storage().ref().child('passportImages/' + id1);
//save User to database
var newUserRef = databaseRef.child(id1);
newUserRef.set({
HEfname: HEfname,
HElname: HElname,
ENfname: ENfname,
ENlname: ENlname,
email: email,
id: id1
}, function (error) {
if (error) {
// The write failed
console.log("User info could not be saved: " + error);
} else {
// Data saved successfully!
isSavedDatabase = true;
console.log("User info saved successfully!");
saveImage(imageFile, id1);
//imageRef.delete(); // remove user image from storage if his info could not be saved t database.
}
});
//save image to storage by ID
function saveImage(imageFile, id) {
// Upload file to the object 'passportImages/id1' (id1 is current user ID)
var uploadTask = firebase.storage().ref().child('passportImages/' + id).put(imageFile);
// Listen for state changes, errors, and completion of the upload.
uploadTask.on(firebase.storage.TaskEvent.STATE_CHANGED, // or 'state_changed'
function (snapshot) {
// Get task progress, including the number of bytes uploaded and the total number of bytes to be uploaded
var progress = (snapshot.bytesTransferred / snapshot.totalBytes) * 100;
console.log('Upload is ' + progress + '% done');
switch (snapshot.state) {
case firebase.storage.TaskState.PAUSED: // or 'paused'
console.log('Upload is paused');
break;
case firebase.storage.TaskState.RUNNING: // or 'running'
console.log('Upload is running');
break;
}
}, function (error) {
databaseRef.child(id).remove(); //remove user info from database if his image could not be uploaded to storage too.
console.log(error);
window.alert("Something went wrong, please try again");
// A full list of error codes is available at
// https://firebase.google.com/docs/storage/web/handle-errors
switch (error.code) {
case 'storage/unauthorized':
// User doesn't have permission to access the object
console.log("Image: User doesn't have permission to access the object");
break;
case 'storage/canceled':
// User canceled the upload
console.log("Image: User canceled the upload");
break;
case 'storage/unknown':
// Unknown error occurred, inspect error.serverResponse
console.log("Image: Unknown error occurred, inspect error.serverResponse");
break;
}
}, function () {
// Upload completed successfully!
isSavedImage = true;
console.log("Image uploaded successfully!");
finalCall();
});
//if all data commited successfully to Firebase pop a massage and reset form.
function finalCall() {
// Show alert
window.alert("Your info has been sent!");
// Clear form
document.forms.RegForm.reset();
}
}
//}
}
【问题讨论】：
标签： javascript firebase firebase-storage